Gamecock, from a reformed perspective, isn’t the only distinction-with-a-differnce whether or not one is elect? And without an “elect-o-meter” none of us has a clue as to whether a Mormon or non-Mormon is one.
Now, we can debate doctrine, of course, and Mormon doctrine as I understand it is not in accord with scripture, so I am dismissive of it.
But for all I know there could be more elect in the LDS church than in the PCUSA.
But they will not be Mormons when they die if they are elect..